Re: clogging qdisc

> Are there any "hacks" in TC allowing to look in the guts?
>
> It looks like it's changing state to "clogged" but
>
> tc -s class ls dev eth0
>
> looks completely normal (only grows number of sfq queues created 
> dynamically for every connection since more and more connections are 
> created but not closed) 


In fact i've noticed something interesting during "clugged" state...

a few runs of:

tc -s class ls dev eth0

shows that filters sort packets well but packets that goes into suitable 
classes are dropped:

class hfsc 1:1012 parent 1: leaf 1012: sc m1 6144Kbit d 10.0s m2 
4096Kbit ul m1 6144Kbit d 10.0s m2 4096Kbit
  Sent 103306048 bytes 75008 pkt (dropped 12, overlimits 0 requeues 0)
  backlog 39Kb 127p requeues 0
  period 13718 work 103306048 bytes rtwork 103306048 bytes level 0

and after a while:

class hfsc 1:1012 parent 1: leaf 1012: sc m1 6144Kbit d 10.0s m2 
4096Kbit ul m1 6144Kbit d 10.0s m2 4096Kbit
  Sent 103306048 bytes 75008 pkt (dropped 116, overlimits 0 requeues 0)
  backlog 39160b 127p requeues 0
  period 13718 work 103306048 bytes rtwork 103306048 bytes level 0

"Sent" stands still and all packets are "dropped"

Some classes passes packets but as time goes by more and more classes 
stops passing and starts dropping.


GG